18860920

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1$

素因数の和:149

約数の個数: 128

約数和(自身を含む): 50803200

約数和(自身を除く): 31942280

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 23, 26, 38, 40, 46, 52, 65, 76, 83, 92, 95, 104, 115, 130, 152, 166, 184, 190, 230, 247, 260, 299, 332, 380, 415, 437, 460, 494, 520, 598, 664, 760, 830, 874, 920, 988, 1079, 1196, 1235, 1495, 1577, 1660, 1748, 1909, 1976, 2158, 2185, 2392, 2470, 2990, 3154, 3320, 3496, 3818, 4316, 4370, 4940, 5395, 5681, 5980, 6308, 7636, 7885, 8632, 8740, 9545, 9880, 10790, 11362, 11960, 12616, 15272, 15770, 17480, 19090, 20501, 21580, 22724, 24817, 28405, 31540, 36271, 38180, 41002, 43160, 45448, 49634, 56810, 63080, 72542, 76360, 82004, 99268, 102505, 113620, 124085, 145084, 164008, 181355, 198536, 205010, 227240, 248170, 290168, 362710, 410020, 471523, 496340, 725420, 820040, 943046, 992680, 1450840, 1886092, 2357615, 3772184, 4715230, 9430460, 18860920]

約数ペア:

[(1, 18860920), (2, 9430460), (4, 4715230), (5, 3772184), (8, 2357615), (10, 1886092), (13, 1450840), (19, 992680), (20, 943046), (23, 820040), (26, 725420), (38, 496340), (40, 471523), (46, 410020), (52, 362710), (65, 290168), (76, 248170), (83, 227240), (92, 205010), (95, 198536), (104, 181355), (115, 164008), (130, 145084), (152, 124085), (166, 113620), (184, 102505), (190, 99268), (230, 82004), (247, 76360), (260, 72542), (299, 63080), (332, 56810), (380, 49634), (415, 45448), (437, 43160), (460, 41002), (494, 38180), (520, 36271), (598, 31540), (664, 28405), (760, 24817), (830, 22724), (874, 21580), (920, 20501), (988, 19090), (1079, 17480), (1196, 15770), (1235, 15272), (1495, 12616), (1577, 11960), (1660, 11362), (1748, 10790), (1909, 9880), (1976, 9545), (2158, 8740), (2185, 8632), (2392, 7885), (2470, 7636), (2990, 6308), (3154, 5980), (3320, 5681), (3496, 5395), (3818, 4940), (4316, 4370)]